What kind of background can turn off the light of the projector?

Question

Photo

A projector is projecting onto an object with the help of a projector for further shooting, while the projected image should not go beyond the object, that is, nothing should be visible on the background behind the object.
What material can be used for the background to "blank" the picture from the projector?

At the same time, the same experiment will need to be implemented for the audience, so to speak, who from the outside will have to see the projected image on the object, and emptiness in the background.

Answer 1

I would also think about the projection technology - LCD - in any case there will be some kind of illumination, DLP - less ...
Well, the experiment decides ...

Answer 2

For example, I found an old video, it's a pity in poor quality
TYK